@misc{indiciaee048ac701a8d,
  title = {Response of gas-purged manometers to oscillations in water level},
  author = {J.R. Beck and Carl R. Goodwin},
  year = {1970},
  doi = {10.3133/wsp1869e},
  url = {https://pubs.usgs.gov/publication/wsp1869E},
  note = {Source identifier: wsp1869E}
}